#1498042 has added support for telling the guest the rotation rate of drives.
I'd like to be able to use this with virt-xml.
[root@gw2 vmstore]# virt-xml gwwin --edit --disk rotation_rate=0 ERROR Unknown options ['rotation_rate']
This needs to be exposed in libvirt first, so reassigning.
This is in qemu 2.11, patch posting was: https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg00697.html
I would really like to see this implemented at the XML layer.
As far as I understand, VMs also get entropy from disks if they are rotating but don't when they are solid state drives.
Windows guests also behave differently if they detect SSD media (virtio-scsi with discard solves this mostly).
There seems to be a workaround (not tested):